In a small bowl whisk all sauce ingredients together: set aside.
Preheat 1 Tablespoon of the oil in a large non-stick skillet over medium-high heat. Add in chicken and cook for 4-5 minutes until almost cooked through.
Pour the homemade teriyaki sauce over and cook until sauce thickens and chicken is fully cooked; just a few more minutes.
Heat remaining oil in a separate large skillet over medium heat; cook frozen vegetables until just tender, 5 to 7 minutes.
Assemble the bowls with 1/2 cup cooked rice each, 1 cup of veggies then divide teriyaki chicken between the 4 bowls.
Garnish with sesame seeds and enjoy!
Refrigerate for 3-5 days or freeze for up to 2 months.